Biology, asked by neerajrawatrz9p69jqi, 1 year ago

What are two components of lichem. Why they considered the pollution indicator?

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Answered by Anonymous
3
✨ HEY MATE ✨

➡️A lichen is an unusual organism because it consists of two unrelated organisms, an alga and a fungus. 
➡️They are considered as Pollution Indicator be used of the reading than they help pollutants to increase in their number .

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Answered by rashi660
0
plants have two modes of nutrition, autotrophic and heterotrophic mode. Based on the method of obtaining food hydrotropic are further classified into -
parasitic plant
saprophytes
symbiotic plant
insectivorous plant
Lichen are symbiotic organism, in which an alga and a fungus live together and derive nutrients from each other. The alga is green and autotrophs. It makes food for both by photosynthesis. The fungus provide shelter, water and mineral to the alga.
the Hardy lichens are useful bioindicator for air pollution, especially sulfer dioxide pollution, since they derive their water and essential nutrients mainly from the atmosphere rather than from the soil.
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